Molding apparatus.



P. WERNICKE.

MOLDING APPARATUS.

APPLICATION FILED JULY 11. 1912.

Patented May 25, 1915.

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MOLDING APPARATUS.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed July 17, 1912. Serial No. 709,853.

To all whom it may concern:

Be it known that I, PAUL WERNIoKna subject of the German Emperor,residing at Eilenburg, in Germany, have invented certain new and usefulImprovements in Molding Apparatus, of which the following is aspecification.

This invention relates to apparatus for molding substances such ascement, mixtures of cement and sand, lime and sand, and the like, andits object is to provide means whereby the material to be molded (whichwill hereinafter be generally referred to as cement) can be introducedinto the mold, and leveled in the same without the use of a separatestrickling appliance or the like.

The invention is illustrated in the accompanying drawing, in which-Figure 1 is a vertical section, showing the apparatus at rest; Fig. 2 isa similar section, showing the apparatus at one stage of its operation,and Fig. 3 a section, showing another stage of the operation.

The apparatus comprises a container at, in which there is a verticallymovable agitating device 6 consisting of a kind of grating or grid fixedto a shank by means of which it can be raised and lowered in thecontainer for the purpose of loosening cement or the like placed. in thecontainer. The floor of the container consists of two perforated platesor grids c and (Z, which project from the sides of the container and areslidable in slots in the container walls. The apertures in these fioorplates are so arranged that the holes in the two plates can be made toregister, so as to form openings in the floor, and that alternativelythe holes in each plate can be covered by imperforate portions of theother plate, these adjustments being made by sliding one plate upon theother. Below the floor 0, (Z the wall of the container at has aprojection forming a flange e, by means of which the container can beslidably engaged with the rim of the molding box f.

The manner of using the apparatus is as follows: The plates 0 and (Z arefirst adjusted so that the holes are covered, and a suitable quantity ofcement is placed in the container, the latter being engaged with themold f, as shown in Fig. 1. The plates 0 and 03 are then adjusted sothat the holes therein register and form openings in the floor, and theagitator b is raised and lowered, to loosen the cement, which poursthrough the openings into the mold, as shown in Fig. 2. Owing tocohesion between the particles of cement, the mold cannot by this meansbe filled up flush with the under-surface of the plate (Z, and cavitiesare formed in the mold, under the im perforate portions of the plate, asshown in Fig. 1, between ridges or mounds of cement projecting into thefloor openings. At this stage the movement of the agitator b is stopped,and the plate (Z is pushed under the plate 0, so that the holes arecovered. By this means the tops of the mounds are sheared off, and thefloor is closed, so that no further material can enter the mold from thecontainer. Then the mold and the container at are moved slightly apart,by lowering the former or raising the latter, to an extent equal to halfthe thickness of the plate d, as shown in Fig. 3. A small amount ofclearance is thus produced between the imperforate portions of the plated and the cement below the same, whereas ridges or mounds of cementstill project somewhat into the holes in the plate d. The plates arethen collectively slid over the top of the mold, so as to smooth thesurface of the cement therein.

What I claim as my invention and desire to secure by Letters Patent ofthe United States is 1. In mold filling apparatus the combination of acontainer consisting of a wall and a horizontally slidable perforatedfloor, and a vertically movable agitating appliance in said containeradapted to rest on said floor, the wall of said container having meansbelow said floor for engagement with the rim of a mold box.

2. In mold filling apparatus the combination of a container consistingof a wall and a horizontally slidable perforated floor, and a verticallymovable grid in said container adapted to be lowered on to said floor,the wall of said container having means below said floor for engagementwith the rim of a mold box.

In witness whereof I have signed this specification in the presence oftwo witnesses.

PAUL WERNICKE.

WVitnesses MORITZ SPREER, RUDOLPH FRICKE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

. Washington, D. G.

